Release 4.18 drivers/staging/rtlwifi/phydm/phydm_acs.c
// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
*
* Copyright(c) 2007 - 2016 Realtek Corporation.
*
* Contact Information:
* wlanfae <wlanfae@realtek.com>
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
* Larry Finger <Larry.Finger@lwfinger.net>
*
*****************************************************************************/
/* ************************************************************
* include files
* *************************************************************/
#include "mp_precomp.h"
#include "phydm_precomp.h"
u8 odm_get_auto_channel_select_result(void *dm_void, u8 band)
{
struct phy_dm_struct *dm = (struct phy_dm_struct *)dm_void;
struct acs_info *acs = &dm->dm_acs;
u8 result;
if (band == ODM_BAND_2_4G) {
ODM_RT_TRACE(
dm, ODM_COMP_ACS,
"[struct acs_info] %s(): clean_channel_2g(%d)\n",
__func__, acs->clean_channel_2g);
result = (u8)acs->clean_channel_2g;
} else {
ODM_RT_TRACE(
dm, ODM_COMP_ACS,
"[struct acs_info] %s(): clean_channel_5g(%d)\n",
__func__, acs->clean_channel_5g);
result = (u8)acs->clean_channel_5g;
}
return result;
}
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static void odm_auto_channel_select_setting(void *dm_void, bool is_enable)
{
struct phy_dm_struct *dm = (struct phy_dm_struct *)dm_void;
u16 period = 0x2710; /* 40ms in default */
u16 nhm_type = 0x7;
ODM_RT_TRACE(dm, ODM_COMP_ACS, "%s()=========>\n", __func__);
if (is_enable) {
/* 20 ms */
period = 0x1388;
nhm_type = 0x1;
}
if (dm->support_ic_type & ODM_IC_11AC_SERIES) {
/* PHY parameters initialize for ac series */
/* 0x990[31:16]=0x2710
* Time duration for NHM unit: 4us, 0x2710=40ms
*/
odm_write_2byte(dm, ODM_REG_CCX_PERIOD_11AC + 2, period);
} else if (dm->support_ic_type & ODM_IC_11N_SERIES) {
/* PHY parameters initialize for n series */
/* 0x894[31:16]=0x2710
* Time duration for NHM unit: 4us, 0x2710=40ms
*/
odm_write_2byte(dm, ODM_REG_CCX_PERIOD_11N + 2, period);
}
}
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void odm_auto_channel_select_init(void *dm_void)
{
struct phy_dm_struct *dm = (struct phy_dm_struct *)dm_void;
struct acs_info *acs = &dm->dm_acs;
u8 i;
if (!(dm->support_ability & ODM_BB_NHM_CNT))
return;
if (acs->is_force_acs_result)
return;
ODM_RT_TRACE(dm, ODM_COMP_ACS, "%s()=========>\n", __func__);
acs->clean_channel_2g = 1;
acs->clean_channel_5g = 36;
for (i = 0; i < ODM_MAX_CHANNEL_2G; ++i) {
acs->channel_info_2g[0][i] = 0;
acs->channel_info_2g[1][i] = 0;
}
if (dm->support_ic_type & ODM_IC_11AC_SERIES) {
for (i = 0; i < ODM_MAX_CHANNEL_5G; ++i) {
acs->channel_info_5g[0][i] = 0;
acs->channel_info_5g[1][i] = 0;
}
}
}
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void odm_auto_channel_select_reset(void *dm_void)
{
struct phy_dm_struct *dm = (struct phy_dm_struct *)dm_void;
struct acs_info *acs = &dm->dm_acs;
if (!(dm->support_ability & ODM_BB_NHM_CNT))
return;
if (acs->is_force_acs_result)
return;
ODM_RT_TRACE(dm, ODM_COMP_ACS, "%s()=========>\n", __func__);
odm_auto_channel_select_setting(dm, true); /* for 20ms measurement */
phydm_nhm_counter_statistics_reset(dm);
}
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void odm_auto_channel_select(void *dm_void, u8 channel)
{
struct phy_dm_struct *dm = (struct phy_dm_struct *)dm_void;
struct acs_info *acs = &dm->dm_acs;
u8 channel_idx = 0, search_idx = 0;
u16 max_score = 0;
if (!(dm->support_ability & ODM_BB_NHM_CNT)) {
ODM_RT_TRACE(
dm, ODM_COMP_DIG,
"%s(): Return: support_ability ODM_BB_NHM_CNT is disabled\n",
__func__);
return;
}
if (acs->is_force_acs_result) {
ODM_RT_TRACE(
dm, ODM_COMP_DIG,
"%s(): Force 2G clean channel = %d, 5G clean channel = %d\n",
__func__, acs->clean_channel_2g, acs->clean_channel_5g);
return;
}
ODM_RT_TRACE(dm, ODM_COMP_ACS, "%s(): channel = %d=========>\n",
__func__, channel);
phydm_get_nhm_counter_statistics(dm);
odm_auto_channel_select_setting(dm, false);
if (channel >= 1 && channel <= 14) {
channel_idx = channel - 1;
acs->channel_info_2g[1][channel_idx]++;
if (acs->channel_info_2g[1][channel_idx] >= 2)
acs->channel_info_2g[0][channel_idx] =
(acs->channel_info_2g[0][channel_idx] >> 1) +
(acs->channel_info_2g[0][channel_idx] >> 2) +
(dm->nhm_cnt_0 >> 2);
else
acs->channel_info_2g[0][channel_idx] = dm->nhm_cnt_0;
ODM_RT_TRACE(dm, ODM_COMP_ACS, "%s(): nhm_cnt_0 = %d\n",
__func__, dm->nhm_cnt_0);
ODM_RT_TRACE(
dm, ODM_COMP_ACS,
"%s(): Channel_Info[0][%d] = %d, Channel_Info[1][%d] = %d\n",
__func__, channel_idx,
acs->channel_info_2g[0][channel_idx], channel_idx,
acs->channel_info_2g[1][channel_idx]);
for (search_idx = 0; search_idx < ODM_MAX_CHANNEL_2G;
search_idx++) {
if (acs->channel_info_2g[1][search_idx] != 0 &&
acs->channel_info_2g[0][search_idx] >= max_score) {
max_score = acs->channel_info_2g[0][search_idx];
acs->clean_channel_2g = search_idx + 1;
}
}
ODM_RT_TRACE(
dm, ODM_COMP_ACS,
"(1)%s(): 2G: clean_channel_2g = %d, max_score = %d\n",
__func__, acs->clean_channel_2g, max_score);
} else if (channel >= 36) {
/* Need to do */
acs->clean_channel_5g = channel;
}
}
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